Magnet Shape: Disc / Round / Flat
Material: Hard Ferrite (Ceramic) and Steel
Coating: Nickel(Ni)       
Grade(Chinese Stardard):         Y8T
Magnet ID:              FPF-70-Y8T-Ni  
Detailed magnetic properties data:
Residual Magnetic Flux Density (Br): 2.0-2.35 KGs (mT):  200-235 mT
Intrinsic Coercivity Force (Hcj):    1.57-2.01 KOe    125-160 KA/m
Coercivity Force (Hcb):              2.64-3.51 KOe    210-280 KA/m
Energy Density (BH)max:              0.8-1.2 MGOe     6.50-9.50 KJ/m³
Operating Temperature:               -40 °C to +250 °C
Magnetisation Direction: Axial / Radially magnetized
Pot Magnet Size:
Pot Total Diameter (D):       70 mm
Pot Total Height (H):        13 mm
Tolerance:         +/-2% mm
Delivery time           7-25 days
Measurements

Ferrite pot magnets
Pot magnets consists of magnet material enclosed in a metal pot. The active magnet face is kept open.
The pot is an essential part of the magnetic circuit.
The two magnetic poles are concentric and are both on the end face of the magnet.
Pot magnets are the most efficient design for gripping, lifting and attracting across air gaps
No loss of magnetism as the magnet is retained in a closed circuit
The pot screens the magnet material from de-magnetising effects
Pot is machineable
Can be inserted into, fitted to, steel without adverse effect
Magnet proper is most efficient magnet shape
Concentration of flux in the mild steel possibly twice that of the magnet proper, creating increased gripping power
Distance of magnetic attraction lower than that of other magnets but grip in intimate contact is vastly superior to magnets of similar material and weight but different design.